ASHRAE Journal - May 2009 - 27

to increase 2.6 K (4.7°F) at 0.75 m/s (148 fpm). Simulations of indoor temperature and comfort predict that the fans are critical to maintain comfort for 100 to 200 hours per year when the evaporative cooler has limited capacity and space temperatures rise. The building has been occupied for a year and a half, and the users are happy with the fans. Loisos+Ubbelohde Office, Alameda, Calif., (Figure 8). This 223 m2 (2,400 ft2) design office is cooled only by a system of operable windows, automated shading, and ceiling and desk fans. The occupancy is 18, for an occupant density of 12 m2 (133 ft2) per person. Ceiling fans are individually controllable from one control panel in the entry area. They are controlled in groups of one or two. Fans have high-efficiency twisted airfoil blades designed by Florida Solar Energy Center/AeroVironment, generating approximately 40% higher cfm/W than paddle-blade fans, drawing between 9 W to 50 W from low to full speed (0.4 to 1.6 m/s [79 fpm to 315 fpm]).20 The system has been in place through one summer in its present configuration, with owner and occupants expressing satisfaction. The owner feels that the fan density shown could be increased for more even coverage. He suggests that air motion sectional diagrams, similar to photometric curves, be published to facilitate the design layout of fans in accordance with work stations. Conclusions Acknowledgments The authors wish to acknowledge the members of Standing Standards Project Committee 55 for their work undertaken to incorporate new air movement provisions into Standard 55, as well as further improvements to the standard identified and under way.21 Furthermore, the authors wish to acknowledge Tyler Hoyt and Elliot Nahman for their assistance with the statistical analysis and graphics. Forthcoming addenda to Standard 552004 include new provisions for using air movement to offset warm air temperatures. They are based on field studies that consistently demonstrate that in neutral and warm environments, people want more air speed. The SET model is used to generate comfort zones in which elevated air speed offsets warm air temperature. New criteria for group local control are specified, making it possible to use air movement in open-plan offices as shown in the two examples. The new air movement provisions should assist the design of both passive and mechanical systems such as natural ventilation, thermal mass cooling, evaporative cooling, and mixedmode HVAC. May 2009 www.info.hotims.com/25204-24 ASHRAE Journal 27

ASHRAE Journal - May 2009

Table of Contents for the Digital Edition of ASHRAE Journal - May 2009

ASHRAE Journal - May 2009
Contents
Commentary
Industry News
Letters
Meetings and Shows
     Moving Air for Comfort
Feature Articles
     Lessons Learned in Portable Classrooms
     Using Time-of-Day Scheduling to Save Energy
     Equal Friction Solution for Duct Sizing
     Anniversary Feature: System Application and Design for School Air Conditioning
Building Sciences
InfoCenter
Emerging Technologies
Special Products
Classified Advertising
Advertising Index
ASHRAE Journal - May 2009 - ASHRAE Journal - May 2009
ASHRAE Journal - May 2009 - Cover2
ASHRAE Journal - May 2009 - 1
ASHRAE Journal - May 2009 - 2
ASHRAE Journal - May 2009 - Contents
ASHRAE Journal - May 2009 - 4
ASHRAE Journal - May 2009 - Commentary
ASHRAE Journal - May 2009 - 6
ASHRAE Journal - May 2009 - Industry News
ASHRAE Journal - May 2009 - 8
ASHRAE Journal - May 2009 - 9
ASHRAE Journal - May 2009 - 10
ASHRAE Journal - May 2009 - 11
ASHRAE Journal - May 2009 - Letters
ASHRAE Journal - May 2009 - 13
ASHRAE Journal - May 2009 - 14
ASHRAE Journal - May 2009 - 15
ASHRAE Journal - May 2009 - Meetings and Shows
ASHRAE Journal - May 2009 - 17
ASHRAE Journal - May 2009 - Feature Articles
ASHRAE Journal - May 2009 - 19
ASHRAE Journal - May 2009 - 20
ASHRAE Journal - May 2009 - 21
ASHRAE Journal - May 2009 - 22
ASHRAE Journal - May 2009 - 23
ASHRAE Journal - May 2009 - 24
ASHRAE Journal - May 2009 - 25
ASHRAE Journal - May 2009 - 26
ASHRAE Journal - May 2009 - 27
ASHRAE Journal - May 2009 - 28
ASHRAE Journal - May 2009 - 29
ASHRAE Journal - May 2009 -      Lessons Learned in Portable Classrooms
ASHRAE Journal - May 2009 - 31
ASHRAE Journal - May 2009 - 32
ASHRAE Journal - May 2009 - 33
ASHRAE Journal - May 2009 - 34
ASHRAE Journal - May 2009 - 35
ASHRAE Journal - May 2009 - 36
ASHRAE Journal - May 2009 - 37
ASHRAE Journal - May 2009 - 38
ASHRAE Journal - May 2009 - 39
ASHRAE Journal - May 2009 - 40
ASHRAE Journal - May 2009 - 41
ASHRAE Journal - May 2009 -      Using Time-of-Day Scheduling to Save Energy
ASHRAE Journal - May 2009 - 43
ASHRAE Journal - May 2009 - 44
ASHRAE Journal - May 2009 - 45
ASHRAE Journal - May 2009 - 46
ASHRAE Journal - May 2009 - 47
ASHRAE Journal - May 2009 - 48
ASHRAE Journal - May 2009 - 49
ASHRAE Journal - May 2009 -      Equal Friction Solution for Duct Sizing
ASHRAE Journal - May 2009 - 51
ASHRAE Journal - May 2009 - 52
ASHRAE Journal - May 2009 - 53
ASHRAE Journal - May 2009 - 54
ASHRAE Journal - May 2009 - 55
ASHRAE Journal - May 2009 -      Anniversary Feature: System Application and Design for School Air Conditioning
ASHRAE Journal - May 2009 - 57
ASHRAE Journal - May 2009 - 58
ASHRAE Journal - May 2009 - 59
ASHRAE Journal - May 2009 - 60
ASHRAE Journal - May 2009 - 61
ASHRAE Journal - May 2009 - 62
ASHRAE Journal - May 2009 - 63
ASHRAE Journal - May 2009 - 64
ASHRAE Journal - May 2009 - 64a
ASHRAE Journal - May 2009 - 64b
ASHRAE Journal - May 2009 - 65
ASHRAE Journal - May 2009 - 66
ASHRAE Journal - May 2009 - 67
ASHRAE Journal - May 2009 - 68
ASHRAE Journal - May 2009 - 69
ASHRAE Journal - May 2009 - 70
ASHRAE Journal - May 2009 - 71
ASHRAE Journal - May 2009 - 72
ASHRAE Journal - May 2009 - 73
ASHRAE Journal - May 2009 - Building Sciences
ASHRAE Journal - May 2009 - 75
ASHRAE Journal - May 2009 - 76
ASHRAE Journal - May 2009 - 77
ASHRAE Journal - May 2009 - 78
ASHRAE Journal - May 2009 - 79
ASHRAE Journal - May 2009 - InfoCenter
ASHRAE Journal - May 2009 - 81
ASHRAE Journal - May 2009 - 82
ASHRAE Journal - May 2009 - 83
ASHRAE Journal - May 2009 - 84
ASHRAE Journal - May 2009 - 85
ASHRAE Journal - May 2009 - 86
ASHRAE Journal - May 2009 - Emerging Technologies
ASHRAE Journal - May 2009 - 88
ASHRAE Journal - May 2009 - 89
ASHRAE Journal - May 2009 - 90
ASHRAE Journal - May 2009 - 91
ASHRAE Journal - May 2009 - Special Products
ASHRAE Journal - May 2009 - 93
ASHRAE Journal - May 2009 - Classified Advertising
ASHRAE Journal - May 2009 - 95
ASHRAE Journal - May 2009 - Advertising Index
ASHRAE Journal - May 2009 - Cover3
ASHRAE Journal - May 2009 - Cover4
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